Last night, the 10 American Idol finalists were announced, and one thing is for sure: the five-year streak of pleasant-seeming, guitar-playing white dudes (in reverse order: Phillip Phillips, Scotty McCreery, Lee DeWyze, Kris Allen, and David Cook) is over.
The SETI Institute's Jill Tarter wants to accelerate our search for cosmic company. Using a growing array of radio telescopes, she and her team listen for patterns that may be a sign of intelligence elsewhere in the universe.
What's six miles wide and can end civilization in an instant? An asteroid — and there are lots of them out there. With humor and great visuals, Phil Plait enthralls the TEDxBoulder audience with all the ways asteroids can kill, and what we must do to avoid them.
Physicist Brian Greene explains how the prevailing theories about the fabric of space changed dramatically in the last century — twice. The most recent shift in thinking came about from a strange mistake, and revealed hidden truths about the nature of our universe. Later in this episode, Greene talks more about why this discovery hints at the existence of other universes.
Originally published on Fri March 8, 2013 11:22 am
North Korea responded to new U.N. sanctions aimed at starving its nuclear program by vowing to cut a Cold War-style hotline and scrap a nonaggression pact with the South.
State-run media said North Korea "abrogates all agreements on nonaggression reached between the North and the South ... and also notifies the South side that it will immediately cut off the North-South hotline."